On Thu, 2 Sep 2004, Andy Heaton wrote: > Hi, > > I'm having a problem with the ISP116x driver, just wondered if anyone else > had come across this. > > I connect a memory stick into the USB, and copy a large file (say 50MB) onto > it. Part way through the copy I unplug the memory stick. My system then > hangs. If I unplug the memory stick early in the copy it sometimes doesn't > happen, but it always happens if I leave it about 10s.
Are you copying the large file to the raw device, or are you mounting the device and copying the large file to a normal filesystem? If you are mounting a filesystem for the copy, then why are you unplugging the device while it is still mounted? It's not at all surprising that you end up with a nasty error. > I'm almost certain the problem is caused by the ISP116x driver, but I'm > completely stuck trying to work out where. When I unplug the memory stick I > see a synchronous call to hci_unlink_urb, which does its job and returns. > About 20s later I see an asynchronous call to the same function. Tracking > back into the kernel, I can see the first call is originating in > storage_disconnect (usb/storage/usb.c), and the second is coming from > command_abort (usb/storage/scsiglue.c). That pattern of unlinks doesn't make sense. Once storage_disconnect has finished, command_abort should never be called. (Of course, I'm basing this on a 2.4.27 kernel -- 2.4.22 might be different but I don't think so.) Alan Stern ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
